Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 57: Ultra-cold Plasmas and Rydberg Systems I (joint session A/Q)
Q 57.4: Vortrag
Donnerstag, 13. März 2025, 12:00–12:15, HS PC
A Floquet-Rydberg quantum simulator for confinement in Z2 gauge theories — •Enrico Domanti1,2,3, Dario Zappalà3,4, Alejandro Bermudez5, and Luigi Amico1,2,3 — 1Technology Innovation Institute, Abu Dhabi, United Arab Emirates — 2University of Catania, Catania, Italy — 3INFN-Sezione di Catania, Catania, Italy — 4Centro Siciliano di Fisica Nucleare e Struttura della Materia, Catania, Italy — 5Instituto de Fisica Teorica, UAM-CSIC, Madrid, Spain
Recent advances in the field of quantum technologies have opened up the road for the realization of small- scale quantum simulators of lattice gauge theories which, among other goals, aim at improving our understanding on the non-perturbative mechanisms underlying the confinement of quarks. In this work, considering periodically-driven arrays of Rydberg atoms in a tweezer ladder geometry, we devise a scalable Floquet scheme for the quantum simulation of the real-time dynamics in a Z2 LGT, in which hardcore bosons / spinless fermions are coupled to dynamical gauge fields. Resorting to an external magnetic field to tune the angular dependence of the Rydberg dipolar interactions, and by a suitable tuning of the driving parameters, we manage to suppress the main gauge-violating terms and show that an observation of gauge-invariant confinement dynamics in the Floquet-Rydberg setup is at reach of current experimental techniques. Depending on the lattice size, we present a thorough numerical test of the validity of this scheme using either exact diagonalization or matrix-product-state algorithms for the periodically-modulated real-time dynamics.
Keywords: lattice gauge theories; Rydberg atoms; quantum simulation